EP1031872A4 - Application of light source including light guide for emanating linearly polarized light to liquid crystal display - Google Patents

Application of light source including light guide for emanating linearly polarized light to liquid crystal display

Info

Publication number
EP1031872A4
EP1031872A4 EP99943363A EP99943363A EP1031872A4 EP 1031872 A4 EP1031872 A4 EP 1031872A4 EP 99943363 A EP99943363 A EP 99943363A EP 99943363 A EP99943363 A EP 99943363A EP 1031872 A4 EP1031872 A4 EP 1031872A4
Authority
EP
European Patent Office
Prior art keywords
light
light source
liquid crystal
crystal display
emanating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP99943363A
Other languages
German (de)
French (fr)
Other versions
EP1031872A1 (en
EP1031872B1 (en
Inventor
T Kushida
Akihiko Uchiyama
Tatsuichiro Kon
Kazuo Yahata
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Teijin Ltd
Original Assignee
Teijin Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Teijin Ltd filed Critical Teijin Ltd
Publication of EP1031872A1 publication Critical patent/EP1031872A1/en
Publication of EP1031872A4 publication Critical patent/EP1031872A4/en
Application granted granted Critical
Publication of EP1031872B1 publication Critical patent/EP1031872B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/13362—Illuminating devices providing polarized light, e.g. by converting a polarisation component into another one
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • G02B6/0031—Reflecting element, sheet or layer
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0056—Means for improving the coupling-out of light from the light guide for producing polarisation effects, e.g. by a surface with polarizing properties or by an additional polarizing elements
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side

Abstract

A liquid crystal display having an improved light use efficiency, and a light source constituting the liquid crystal display. This display comprises (I) a light source for emanating a linearly polarized light having one vibrational direction including (i) a light guide made of a transparent medium and having an end face on which a light from a light source falls, two faces opposed to each other and one acting as an output face, and a haze-anisotropic layer, (ii) a light source disposed on the end face of the optical guide, and (iii) a reflector disposed near the face opposed to the output face of the optical guide; and (II) a polarizer disposed on the output face side of the optical guide such that the axis of polarization is parallel with the direction in which the haze value in the haze-anisotropic layer takes the maximum.
EP99943363A 1998-09-16 1999-09-16 Application of light source including light guide for emanating linearly polarized light to liquid crystal display Expired - Lifetime EP1031872B1 (en)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
JP26168898 1998-09-16
JP26168898 1998-09-16
JP37336598 1998-12-28
JP37336598 1998-12-28
JP15649699 1999-06-03
JP15649699 1999-06-03
PCT/JP1999/005045 WO2000016154A1 (en) 1998-09-16 1999-09-16 Application of light source including light guide for emanating linearly polarized light to liquid crystal display

Publications (3)

Publication Number Publication Date
EP1031872A1 EP1031872A1 (en) 2000-08-30
EP1031872A4 true EP1031872A4 (en) 2003-02-05
EP1031872B1 EP1031872B1 (en) 2009-01-14

Family

ID=27321013

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99943363A Expired - Lifetime EP1031872B1 (en) 1998-09-16 1999-09-16 Application of light source including light guide for emanating linearly polarized light to liquid crystal display

Country Status (7)

Country Link
US (1) US6559909B1 (en)
EP (1) EP1031872B1 (en)
JP (1) JP4249394B2 (en)
KR (1) KR100711016B1 (en)
DE (1) DE69940300D1 (en)
TW (1) TW507104B (en)
WO (1) WO2000016154A1 (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001038932A1 (en) * 1999-11-24 2001-05-31 Citizen Watch Co., Ltd. Liquid crystal display unit
JP2006268060A (en) * 2000-11-13 2006-10-05 Asahi Kasei Chemicals Corp Light guide and method for producing transparent thermoplastic resin composition for the light guide
US20080043490A1 (en) * 2005-09-09 2008-02-21 Fusion Optix Inc. Enhanced Light Guide
KR100776463B1 (en) * 2004-09-11 2007-11-16 레디언트 옵토-일렉트로닉스 코포레이션 Light guide plate and LGP-based FFP
KR100657968B1 (en) * 2005-08-27 2006-12-14 삼성전자주식회사 Illuminator for flat panel display device
US7486854B2 (en) * 2006-01-24 2009-02-03 Uni-Pixel Displays, Inc. Optical microstructures for light extraction and control
KR100837398B1 (en) * 2006-06-14 2008-06-12 삼성전자주식회사 Polarization separating film and backlight unit employing the same
US7784954B1 (en) 2006-07-25 2010-08-31 Fusion Optix, Inc. Polarization sensitive light homogenizer
EP2491445B1 (en) 2009-10-24 2018-01-03 3M Innovative Properties Company Light source and display system incorporating same
EP3258167A3 (en) 2009-12-08 2018-04-18 3M Innovative Properties Co. Optical constructions incorporating a light guide and low refractive index films
TW201207442A (en) * 2009-12-25 2012-02-16 Mitsui Chemicals Inc Polarizing diffusion film, method for fabricating the same, and liquid crystal display apparatus including the same
JP7152662B2 (en) * 2016-12-07 2022-10-13 セントラル硝子株式会社 Light guide plate, surface emitting device, and method for manufacturing light guide plate
CN112041737A (en) * 2018-04-27 2020-12-04 日东电工株式会社 Light adjusting film and liquid crystal display device
TWI676067B (en) * 2018-05-15 2019-11-01 友達光電股份有限公司 Display device having ambient light compensation design
WO2023237950A1 (en) * 2022-06-08 2023-12-14 3M Innovative Properties Company Optically diffusive film and optical system including same

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997041484A1 (en) * 1996-04-26 1997-11-06 Philips Electronics N.V. Optical system
US5751388A (en) * 1995-04-07 1998-05-12 Honeywell Inc. High efficiency polarized display

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1312320C (en) * 1987-11-12 1993-01-05 Makoto Oe Plane light source unit
JP3014811B2 (en) 1991-08-08 2000-02-28 富士通株式会社 Polarizer and modulator provided with the polarizer
JP3519130B2 (en) 1994-09-01 2004-04-12 松下電器産業株式会社 Liquid crystal display and its backlight
JPH08271892A (en) * 1995-03-28 1996-10-18 Nitto Denko Corp Polarized light forming method, device therefor and liquid crystal display device
DE69721505T2 (en) 1996-02-29 2003-11-20 Minnesota Mining & Mfg FILM FOR BRIGHTNESS INCREASE
US5825543A (en) 1996-02-29 1998-10-20 Minnesota Mining And Manufacturing Company Diffusely reflecting polarizing element including a first birefringent phase and a second phase
US5867316A (en) 1996-02-29 1999-02-02 Minnesota Mining And Manufacturing Company Multilayer film having a continuous and disperse phase
JP3090890B2 (en) * 1996-03-08 2000-09-25 松下電器産業株式会社 Anisotropic scattering element and liquid crystal display using the same
JPH09274108A (en) 1996-04-03 1997-10-21 Teijin Ltd Polarizing element and liquid crystal display device
JPH1096816A (en) * 1996-09-25 1998-04-14 Sumitomo Bakelite Co Ltd Sheet-like polarizing element and liquid crystal display element formed by using the same
KR100692104B1 (en) * 1997-06-06 2007-12-24 스미또모 가가꾸 가부시키가이샤 Reflective Liquid Crystal Display and Light Diffusion Reflector
JPH11133409A (en) * 1997-10-24 1999-05-21 Sharp Corp Liquid crystal display device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5751388A (en) * 1995-04-07 1998-05-12 Honeywell Inc. High efficiency polarized display
WO1997041484A1 (en) * 1996-04-26 1997-11-06 Philips Electronics N.V. Optical system

Also Published As

Publication number Publication date
EP1031872A1 (en) 2000-08-30
DE69940300D1 (en) 2009-03-05
TW507104B (en) 2002-10-21
KR20010024649A (en) 2001-03-26
WO2000016154A1 (en) 2000-03-23
JP4249394B2 (en) 2009-04-02
US6559909B1 (en) 2003-05-06
KR100711016B1 (en) 2007-04-25
EP1031872B1 (en) 2009-01-14

Similar Documents

Publication Publication Date Title
US6163351A (en) Backlight for liquid crystal display apparatus and liquid crystal display apparatus incorporating the same
EP1031872A4 (en) Application of light source including light guide for emanating linearly polarized light to liquid crystal display
US6352350B1 (en) High efficiency flat illuminator for liquid crystal micro-display
EP1432948B1 (en) Micro-structured illumination system for providing polarized light
CA2099067A1 (en) Plane Light Source Unit
US6014256A (en) Polarizing beam splitter/combiner
CA2179625A1 (en) Optical polarizer
MY121195A (en) Reflective polarizer with brightness enhancement
AU2003238708A1 (en) Optical device and display operating in two dimensional and autostereoscopic three dimensional modes
EP1116987A3 (en) Organic electroluminescent device, polarizing surface light source, and liquid-crystal display
EP0930522A4 (en) Liquid crystal display
JPH0973083A (en) Illuminator and liquid crystal display device
WO2003029884A1 (en) Liquid crystal display device
KR940701548A (en) Retroreflective polarizer
EP0372973A3 (en) Liquid crystal display device comprising improved viewing angle characteristics
JPH11167809A (en) Back light system for transmission electron light modulation using polarization effect
KR890007103A (en) LCD Display
JP2001507483A (en) Display device
JP4794069B2 (en) Illumination device and liquid crystal display device
HK1028109A1 (en) Liquid crystal display.
EP1223459A3 (en) Liquid-crystal display
US11506830B2 (en) Backlight module and display device
TW350927B (en) Liquid crystal display panel
MY120730A (en) A polarized- light converting optical system, a polarized- light converting elemental device, a polarized- light converting elemental device array and a projection- type display device using any one of those components
TW348220B (en) Polarized superfluorescent fiber sources

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20000518

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

A4 Supplementary search report drawn up and despatched

Effective date: 20021223

RIC1 Information provided on ipc code assigned before grant

Ipc: 7G 02B 5/30 B

Ipc: 7G 02B 5/02 B

Ipc: 7G 02B 6/00 B

Ipc: 7G 02F 1/1335 B

Ipc: 7G 02F 1/13357B

Ipc: 7F 21V 8/00 A

17Q First examination report despatched

Effective date: 20040212

RBV Designated contracting states (corrected)

Designated state(s): DE FR GB NL

17Q First examination report despatched

Effective date: 20040212

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

RIN1 Information on inventor provided before grant (corrected)

Inventor name: YAHATA, KAZUO,T

Inventor name: KON, TATSUICHIRO,T

Inventor name: UCHIYAMA, AKIHIKO,T

Inventor name: KUSHIDA, TAKASHI,T

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB NL

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 69940300

Country of ref document: DE

Date of ref document: 20090305

Kind code of ref document: P

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20091015

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20150716

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20150914

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20150916

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20151020

Year of fee payment: 17

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 69940300

Country of ref document: DE

REG Reference to a national code

Ref country code: NL

Ref legal event code: MM

Effective date: 20161001

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20160916

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20161001

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20170531

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160916

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170401

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160930